diff --git a/lab10/jacobi/jacobi_mpi.h b/lab10/jacobi/jacobi_mpi.h
index 6939da8..e37ac3f 100644
--- a/lab10/jacobi/jacobi_mpi.h
+++ b/lab10/jacobi/jacobi_mpi.h
@@ -5,9 +5,7 @@
 
 class JacobiMPI : public Jacobi {
  public:
-  Result run(const Matrix& init, double epsilon, int maxNumIter) {
-    return Result{};
-  }
+  Result run(const Matrix& init, double epsilon, int maxNumIter);
 };
 
 #endif  // JABOBI_MPI_H